| SP | DeLeon, J.DeLeon, Jose >> | 29 | 1989 | R | 100 | 18 | 18 | 9 | 3 | 3.69 | .315 | 1.38 | 8.1 | 4.3 | 5.5 | 122.0 | 110 | 53 | 50 | 10 | 58 | 75 | 1 | 0 | 0 | 1 | 11 | 0 | 1 | 4.26 |
| SP | Clemens, R.Clemens, Roger >> | 27 | 1989 | R | 73 | 17 | 17 | 6 | 6 | 4.36 | .344 | 1.55 | 10.2 | 3.9 | 5.9 | 109.1 | 123 | 54 | 53 | 10 | 47 | 71 | 1 | 0 | 0 | 0 | 8 | 2 | 1 | 4.24 |
| SP | Finley, C.Finley, Chuck >> | 27 | 1989 | L | 61 | 17 | 17 | 10 | 5 | 3.45 | .327 | 1.46 | 8.4 | 4.7 | 5.7 | 120.0 | 112 | 49 | 46 | 10 | 63 | 76 | 2 | 0 | 0 | 0 | 11 | 0 | 2 | 4.39 |
| RP | Nelson, G.Nelson, Gene >> | 29 | 1989 | R | 75 | 36 | 0 | 3 | 2 | 4.50 | .330 | 1.46 | 7.9 | 5.3 | 6.0 | 48.0 | 42 | 24 | 24 | 5 | 28 | 32 | 0 | 2 | 0 | 0 | 0 | 1 | 2 | 4.83 |
| RP | Costello, J.Costello, John >> | 29 | 1989 | R | 73 | 21 | 0 | 1 | 2 | 4.50 | .317 | 1.39 | 8.0 | 4.5 | 5.1 | 28.0 | 25 | 15 | 14 | 2 | 14 | 16 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 4.29 |
| RP | DiPino, F.DiPino, Frank >> | 33 | 1989 | L | 70 | 18 | 0 | 0 | 1 | 2.55 | .288 | 1.22 | 9.8 | 1.5 | 6.8 | 24.2 | 26 | 7 | 7 | 1 | 4 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2.54 |
| CL | Stanton, M.Stanton, Mike † >> | 22 | 1989 | L | 94 | 34 | 0 | 3 | 3 | 1.98 | .264 | 1.07 | 6.8 | 3.0 | 8.3 | 36.1 | 27 | 10 | 8 | 2 | 12 | 33 | 0 | 22 | 3 | 0 | 0 | 0 | 1 | 2.89 |